Foamed composite panel with improved acoustics and durability
US6596389B1 · kind B1 · utility
44Cited by
16References
19Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 17, 2000 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | May 1, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249986
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An acoustical panel formed from a fibrous, open-celled material comprised of up to about 50% by weight fibers, between about 3% and about 10% by weight binder, between about 20% and about 75% by weight filler and about 0.01% to about 2.0% by weight surfactant. Additionally, voids are formed within the panel having an average distribution size diameter of about 50 &mgr;m to about 250 &mgr;m. The acoustic panel achieves very high sound absorption properties without the need for additional surface perforations, while maintaining a very high surface hardness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.